G a f winckler



Oct. 22, 1935. e. A. F. WINCKLER OPERATION AND REGULATION OF RECIPROCATING PUMPS Filed April 25, 1934 3 Sheets-Sheet l fly. 1

1935. G. A. F. WINCKLER 2,0

OPERATION AND REGULATION OF RECIPROCATING PUMPS Filed April 25, 1934 5 Sheets-Sheet 2 Oct. 22, 1935. w E 2,018,429

OPERATION AND REGULATION OF RECIPROCATING PUMPS Filed April 25, 1934 3 Sheets-Sheet 3 Patented Oct. 22, 1935 UNITED STATES PATENT OFFICE OPERATION AND REGULATION OF RECIPROCATING PUlVIPS 6 Claims.

The invention relates to a method and apparatus for operating and regulating a bellows p p- The invention consists of a reciprocating bel- .5 lows fuel pump operated in one direction by a spring and in the opposite direction by a solenoid magnet and is adapted for burners used in boilers, etc. The invention further consists of operating a solenoid magnet armature by an elec- 10 tro-thermo switch which energizes the magnet intermittently and allows the spring to operate and regulate the pump both progressively and at maximum pressure.

The object of the invention is to provide a 15 fluid bellows pump which is self-regulating and operating with a minimum amount of dangers and fluid spill and cheap to manufacture.

Referring to the figures:

Fig. 1 is a diagrammatic view showing the 20 pump in position.

Fig. 2 is a front elevation of the pump with the casing in section.

Fig. 3 is .a plan view of the same.

Fig. 4 is an enlarged vertical section with the 25 magnet in elevation.

Fig. 5 is a cross-section of the inlet and discharge passage.

Fig. 6 is a side elevation of the pump with electric diagram of connections.

30 Fig. '7 is a plan view of the thermo-electric switch.

Fig. 8 is a cross-section of the same.

Referring to the drawings which illustrate the new fluid feed pump l which receives its fluid supply from the tank H and .feed pipe l2. 'The fluid is forced into the discharge pipe l3, the opposite end of which, is operatively connected through a vaporizing system M to the burner ii for producing a flame for heating the water in 40 the coil I6 enclosed in the boiler casing H. The water supply is fed into the lower pipe I6 and passes up through the coil and discharges at the opposite end of the coil l8 and is carried ed for the purpose for which the structure is de- 45 signed as heated water or steam.

To start the flame, a pilot heating system is used to heat the vaporizer to convert the fluid into gas suitable for the burner flame; this is accomplished by connecting the burner IS with 50 the illuminating gas system of which the pipe 19 is a part which discharges gas into the burner for pilot lighting.

The pump I0 is a reciprocating bellows type provided with a base 20 for supporting the struc- 5 ture. Cast integral with the base 20 are pump mounting blocks 2| and 22 between which is a space 23 in which is located the bellows pump 24. The pump is made of flexible corrugated metal and has an extended vertical movement approximately one-eighth of an inch for the 5 pumping operation. j

Formed in the under-side of the mounting block 2| is an annular depression 25 adapted to receive the top flange 26 of the pump 24. The flange 26 is rigidly secured to the mounting block 2| and is fluid-tight. The lower end of the pump 24 is provided with an annular sleeve 21 adapted to encompass the pump head 28 which is made of substantial size to take the pressure strains of the pumping operation. The head is rigidly secured to the sleeve 21 and is fluid-tight.

Rigidly secured to the pump head is a guiding rod 29 which has a sliding movement in the hole 30 formed in the lower mounting block 22. Formed in the lower end of the guiding rod 20 is a slot 3| adapted to receive the connecting pump members.

The bellows is the pumping unit and any downward movement will cause corrugations to extend downwardly which allows the pump to be filled with the fluid 32. The reverse movement of the pump 24 forces the fluid 32 into the discharge passage 33 which is connected to the discharge pipe l3 and in turn to the burner IE to be consumed by the heating flame.

The fluid from the supply tank H passes into the pipe 12 on its way to the pump l0 and is controlled manually by the valve 34.

The pipe [2 is provided with suitable couplings which are threaded into the upper mounting block 35 2! as indicated by the numeral 35.

Formed in the upper mounting block 2| is the fluid-feeding and discharge passages equipped with ball valves 36 and 31 for controlling the distribution of the fluid.

The fluid from the pipe l2 enters the passage 38 which is right angle in form. The lower end of the angle enters the superimposed passage 39 of different diameters. The transition formed between the passages provides a seat 40 for the ball valve 36 of smaller diameters. Leading out of the fuel passage 39 is the passage 33, the lower end of which, enters the pump 24. This construction allows the pump to fill with fluid preparatory to the pumping operation. Superimposed over the passage 39 is a discharge passage 4| of larger diameter. The transition formed between the passages 39 and 4| provides a seat for the ball valve 31 in the discharge line which is connected to the discharge pipe l3 leading to the burner and boiler.

The valve construction is one of the embodiments of the invention and when the fluid enters the pump it is led into the passage 38 which raises the ball valve 36 sufficiently to allow the fluid to pass into the passage 33 and thence to the pump 24. The upward movement of the pump 24 forces the fluid back into the passages 33 and 39. The pressure caused by the pumping action forces the ball valve 36 on its seat and prevents the fluid from passing back into the feed pipe. Simultaneously the pressure raises the ballvalve 31 from its seat and causes the fluid, to pass out into the discharge pipe I 3 to the burner l5, thereby completing the pumping operation.

The pump 24 receives its reciprocating movement in one direction by an electrical current of the alternating type energizing a solenoid magnet 42 and in the opposite direction by the spring 43. These members working alternately produce the pumping action. Normally the armature 44 of the solenoid magnet is in its lowest position as indicated in Fig. 4. The magnet 42 is electrically energized, which causes the armature 44 to rise carrying with it the lever 45 which is fulcrumed at 46 in the bracket 41 forming a part of the mounting member 22. The armature 44 is provided with downward projections which support the operating pin. The pin 48 rests in the slot in the lever having sufificient clearance to allow the lever to swing without binding. The opposite end of the lever 45 is provided with a' hole having 'sufiicient clearance to allow the lever t'o'swing carrying with it the pin 49. The lever rests in a slot formed in the guiding rod 30; V

Formed integral therewith and extending downwardly from the lever 45 is an arm 50 having holes 5| formed therein. One endof the spring 43 is anchored in the hole 5! and the opposite end of the spring is anchored in the lug 52 formed with the base 20. The holes 5| allow the stroke of the pump to be adjusted within a certain range to increase or decrease the output of the pump. The solenoidmagnet is energized by an electric current preferably of the alternating type as indicated by the conductors 53 and 54. "file conductors 53 and 54 are connected up to the magnet circuit conductors 55 and 56. The conductor-53 is directly connected to the magnet conductor 55, while the conductor 52 is connected to a thermoelectric switch'51 and thence in turn to the magnet conductor 56. By this construction an intermittent make and break switch is used to operate the pump 24 by the upward pull of the armamm 44 which causes the pump to extend downwardly during-the'fluid filling operation, after which, the pressure operation of the pump is controlled by the spring 43. To accomplish the make and break operation, a thermo-electric switch is used. The conductor 54 is connected to the contact 58 which passes against the switch cap 59 forming'a part of the switch. The cap 59 is secured to an insulating disc 60. On the opposite ,side of the disc 66 is a similar conductorcap 6| which is connected up intorthe circuit through a the conductor 45 of the magnet circuit. Secured tothe insulating disc 60, at one side, are the thermo-electric switches 62 and 63. The. switch member 62 is bi-metallic in its construction and 7 when subjected to heat'will cause it to bend and contact the switch 63 thereby closing the cirv cuit. To heat the switch member 62 a coil of re- I sistan'ce wire is wound round the member and electrically insulated from it by the material 65.

again and this is kept up continually at short 10 v intervals to cause the pump to operate in one direction and the spring to operate in the other direction. V

a In operation the pump i0 receives its fluid supply from the tank ll through the feed pipe l2. lb

The fluid passes through the bellows pump 24.

The magnet 42 is energized which causes the armature 44 to rise carrying with it the lever 45 which causes the pump 24 to extend downwardly. This operation takes place when the contact 20 switches 63 and 64 are closed; 'When the switch 64 cools off the contacts63 and 64 are broken which allows the spring 43 to complete the pumping action and causes the armature 44 to drop. This action is carried on continually in an 24 intermittent manner and serves asthe pumping operation.

If the pressure in the pump 24 builds unit will progressively regulate itself and if a maximum pressure is reached the pump will automatically stop. This is accomplished by the interlocking action or the pump pressure and the spring tension, that is, if the pressure in the pump progressively builds up it will extend the D mp downwardly the full length or the intake stroke 35 against the tension of the spring which isthe pumping element. When the pump reaches an equilibrium, that is, when the force exerted by the pump pressure is equalled to the maximum spring pressure, there remains no difference in pressure-to open the magnetic circuit, hence when the electric circuit is again closed by the intermittent thermo-switch there can be no motionto the armature therefore no pumping action until the output pressure is released, thus it feeds the fluid in accordance with the demand at a predetermined pressure regulated by the spring tension. Since the pressure of the spring varies in proportion to its extension, the stroke must vary 1 with the external pressure, hence varies with the demand; also as a natural function 01 the magnetic circuit its power'demand decreases with a decrease of stroke, thus it can be seen that the power input is proportional to the demand of the 55 pump.

What I claim as new and desire to secure by Letters Patent in the United States is: V 1. In an apparatus for operatingand regulating a reciprocating pump having a corrugated c0 tric switch connected into theelectrical circuit for operating the pump in one direction, a T-arm integral with the lever, a spring anchored to the pump base and the T-arm for operating and V regulating the pump in the opposite direction, a

progressive increase in pressure in the cylinder will progressively bring the spring pressure into balance with it for regulating the said pressure to a maximum, a progressive reduction oi. the pressure in'the cylinder will again bring the pumping spring and depending members in the I pumping range in cooperation with the solenoid magnet and the thermo-electric switch.

2. In a reciprocating fluid pump having a corrugated bellows, a lever pivotally connected to the bellows, a solenoid magnet armature connected to the opposite end of the lever, an electric circuit connected to the magnet, a thermo-electric switch in the electrical circuit for operating the pump in one direction, and means for operating and regulating the pump in the opposite direction.

3. In a reciprocating fluid pump having a corrugated bellows, a lever pivotally connected to the bellows, a solenoid magnet armature connected to the opposite end of the lever, an electric circuit connected to the magnet, a thermo-electric switch in the elctrical circuit for operating the pump in one direction, a T-arm integral with the lever, a, spring anchored to the pump base and the T-arm for operating and regulating the pump in the opposite direction.

4. In a reciprocating fluid pump having a corrugated bellows, a lever pivotally connected to the bellows, a solenoid magnet armature connected to the opposite end of the lever, an electric circuit connected to the magnet, a thermo-electric switch in the electrical circuit for operating the pump in one direction, a T-arm integral with the lever, a spring anchored to the pump base and the T-arm for operating and regulating the pump in the opposite direction, and means for regulating the stroke of the pump.

5. In a reciprocating fluid pump having a corrugated bellows, a lever pivotally connected to the bellows, a solenoid magnet armature connected to the opposite end of the lever, an electric circuit connected to the magnet, a thermoelectric switch in the electrical circuit for operating the pump in one direction, a T-arm integral with the lever, a spring anchored to the pump base and the T-arm for operating and regulating the pump in the opposite direction, a plurality of holes in the T-arm for changing the position of the pumping spring to determine the line pressure of the pump, and means for admitting and discharging the fluid from the pump.

6. In a reciprocating fluid pump having a corrugated bellows, a lever pivotally connected to the bellows, a solenoid magnet armature connected to the opposite end of the lever, an electric circuit connected to the magnet, a thermoelectric switch in the electrical circuit for operating the pump in one direction, a T-arm integral with the lever, a spring anchored to the pump base and the T-arm for operating and regulating the pump in the opposite direction, a plurality of holes in the T-arm for changing the position of the pumping spring to determine the line pressure of the pump, an intake pipe connected to the frame and pump, two-way check valves in the frame, a discharge pipe connected to the frame to allow the pump to operate.

GUNNAR A. F. WINCKLER. 

